They vary in length & pitch. Different machine types. I drew the example in the screen capture & still have the original file.
EDIT: In the image above, the screw is not for anything in particular, it was just verification that I could create the 3D model using TC. I would have to gather some data on all of our equipment to get you any specifics, along with dimensional data on all of the bottles we currently fill. We fill round, oval, rectangle, & square shaped bottles.